4.5 Article

Characterization and in vitro assembly of tick-borne encephalitis virus C protein

Journal

FEBS LETTERS
Volume 594, Issue 12, Pages 1989-2004

Publisher

WILEY
DOI: 10.1002/1873-3468.13857

Keywords

assembly; C protein; DENV; flavivirus; protein-nucleic acid interaction; TBEV

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Tick-borne encephalitis virus (TBEV), a member of flaviviruses, represents a serious health threat by causing human encephalitis mainly in central and eastern Europe, Russia, and northeastern Asia. As no specific therapy is available, there is an urgent need to understand all steps of the TBEV replication cycle at the molecular level. One of the critical events is the packaging of flaviviral genomic RNA by TBEV C protein to form a nucleocapsid. We purified recombinant TBEV C protein and used a combination of physical-chemical approaches, such as size-exclusion chromatography, circular dichroism, NMR spectroscopies, and transmission electron microscopy, to analyze its structural stability and its ability to dimerize/oligomerize. We compared the ability of TBEV C protein to assemblein vitrointo a nucleocapsid-like structure with that of dengue C protein.

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